.scrollbar {
    overflow: hidden;
    position: relative;
    .scrollbar__wrap {
      overflow: scroll;
      overflow-x: hidden;
      height: 100%;
    }
    .scrollbar__bar {
      position: absolute;
      right: 2px;
      bottom: 2px;
      z-index: 1;
      border-radius: 4px;
      opacity: 0;
      transition: opacity 0.12s ease-out;
      &.is-horizontal {
        height: 6px;
        left: 2px;
      }
      &.is-vertical {
        width: 6px;
        top: 2px;
      }
      &.is-horizontal > div {
        height: 100%;
      }
      &.is-vertical > div {
        width: 100%;
      }
    }
    .scrollbar__thumb {
      position: relative;
      display: block;
      width: 0;
      height: 0;
      cursor: pointer;
      border-radius: inherit;
      background-color: rgba(144, 147, 153, 0.3);
      transition: background-color 0.3s;
    }
  }
  
  .scrollbar:active > .scrollbar__bar,
  .scrollbar:focus > .scrollbar__bar,
  .scrollbar:hover > .scrollbar__bar {
    opacity: 1;
    transition: opacity 0.34s ease-out;
  }
  